The 65h JSAP Spring Meeting, 2018

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10 Spintronics and Magnetics » 10.1 Emerging materials in spintronics and magnetics (including fabrication and charactrization methodologies)

[19p-D104-7~21] 10.1 Emerging materials in spintronics and magnetics (including fabrication and charactrization methodologies)

10.1と10.2と10.3のコードシェアセッションあり

Mon. Mar 19, 2018 2:45 PM - 7:00 PM D104 (56-104)

Jun Okabayashi(The Univ. of Tokyo), Takeshi Kato(Nagoya Univ.), Yota Takamura(TITECH)

6:30 PM - 6:45 PM

△ [19p-D104-20] Detection of Toroidal Moment in Magnetic Nanostructures by Optical Second Harmonic Generation

〇Yoshifumi Sato1, Shunsuke Sakuragi1,2, Takuya Togashi1, Teruya Ishihara1, Masakazu Matsubara1 (1.Tohoku Univ., 2.Keio Univ.)

Keywords:multiferroics, toroidal moment, second harmonic generation

Toroidal moment is one of the important order parameters of multiferroics. Toroidal moment breaks both space inversion symmetry and time reversal symmetry. We made permalloy triangle nanostructures, which realized spin vortex state. We succeeded in detecting toroidal moment induced by the vortex state, using magnetic second harmonic generation (MSHG). MSHG is the sensitive method to detect both space inversion symmetry breaking and time reversal symmetry breaking.